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1
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2by Alldredge, Alice L.Subjects: “...VERTICAL ORIENTATION...”
Published 1990
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3by Blaisdell, George L.Subjects: “...VERTICAL ORIENTATION...”
Published 1981
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4by Shumskii,P. A.Subjects: “...ORIENTATION(DIRECTION)...”
Published 1975
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10by Field,William O.Subjects: “...ORIENTATION(DIRECTION)...”
Published 1975
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11by Donovan,Gregory JamesSubjects: “...Vertical orientation...”
Published 1982
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